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Note 11 - Income Taxes and Deferred Tax Asset/Liability (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority | $ 314,000 |  |
Deferred Tax Liabilities, Net, Noncurrent | $ 360,000 |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate | 35.00% | 35.00% | 35.00%

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- Definition No authoritative reference available. + References No definition available. + Details
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